I'm reviving this thread a little. In Calvert County, we are required to have THREE ACRES for any sort of livestock, chickens included, not matter whether it's 2 or twenty. If there's anyone on this forum who is from Calvert and has any information other than this, I'd love to know. The last I heard, it was up for discussion about a year ago, but the only change that was made was that, if you lived on less than three acres and wanted a small flock, you must send a petition to the Calvert Co. Council. Of course, everything is subject to the covenants of a particular neighborhood as well.